It sounds like he likes you, to me. He may need to know that you’re interested in him as more than a friend — but you have to do this very carefully. You don’t want to come on too strong so that you are the aggressor. But you do want to amp up the flirting so that he sees things are different and that you’re seeing him as more than a friend these days.
The first thing I’d do if I were you, is to check out (and buy) my book, Think & Date Like A Man. You can get it by clicking on the Relationship Advice Books link above. The book will show you how to start treating him as more than a friend without stepping over the line.
Give him an extra sexy smile or look and start considering him as someone you’d like to hang out with as more than just friends. He needs to feel the heat in order to generate his own! You can even tell him that you’ve never really noticed how sexy he is before.
If this feels right to you, then do it, and if he responds, ultimately, by asking you out on a date, and treating you as a girlfriend, not just a friend, then you’ll have your answer about his feelings. But if you do all this, and what’s in the book as well, and he still doesn’t respond, then I think you’ll know he’s only interested in friendship with you.